期刊
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
卷 443, 期 -, 页码 535-539出版社
ELSEVIER
DOI: 10.1016/j.colsurfa.2013.12.020
关键词
Activated carbon; Fluorination; Supercapacitor; Kinetics; Non aqueous electrolyte
资金
- Advanced Technology Center program of the Korea Evaluation Institute of Industrial Technology (KEIT) - Korea government Ministry of Trade, Industry Energy [10035919]
- National Research Foundation of Korea - Ministry of Education, Science, and Technology [NRF-2010-C1AAA001-0029018]
- Energy Efficiency & Resources program of the Korea Institute of Energy Technology Evaluation Planning (KETEP)
- Korea government Ministry of Trade, Industry Energy [20122010100090]
- Korea Evaluation Institute of Industrial Technology (KEIT) [10035919, 20122010100090] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Fluorinated activated carbon (F-AC) exhibits significantly improved electrochemical capacitive performance compared to raw activated carbon (R-AC). F-AC electrode shows a specific capacitance coming up to 19.8 F cm(-3), whereas the capacitance of R-AC electrode is 18.4 F cm(-3). Besides, the kinetic enhancement of F-AC is also memorable. This phenomenon indicates that F-AC tends to form electric double-layer ions on its surface more rapidly than does R-AC. This formation is a result of the increased electrical conductivity attributed to the semi-ionic bonding character between fluorine and activated carbon. The electrochemical improvement of F-AC proves that fluorination is a very effective method for providing greater possibilities for supercapacitor applications of AC in nonaqueous electrolytes. (C) 2014 Elsevier B.V. All rights reserved.
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